Driving Test Practice

Louisiana: Emergencies — Part 4 Practice Test

Skids, hydroplaning, brake failure, tire blowouts, a stuck accelerator, fires, a car in water, bad weather and what to do after a crash. — Part 4

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35 questions · About 14 min

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  • Every answer cites its source in the manual
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Questions are original and based on the official manual "Class D & E Driver’s Guide" (Revised August 2025 (DPSMV2052 R08/25)), Louisiana Office of Motor Vehicles.

All 35 questions in this practice test

Take the test above first, then use this list to study. Tap “Show answer” to see the correct answer and explanation.

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  1. When you turn the ignition off after your gas pedal sticks, what must you take care NOT to do?

    • Shift the gear lever out of neutral into drive
    • Lock the steering wheel locking mechanism
    • Switch off the hazard flashers
    • Press on the brake pedal
    Show answer

    Correct answer: Lock the steering wheel locking mechanism

    When turning the ignition off, use care not to lock the steering wheel locking mechanism.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  2. After you turn the ignition off because of a stuck gas pedal, what will a vehicle with power steering and brakes require?

    • Much less effort to steer
    • Much more effort to control
    • No change in steering or braking
    • The key to be put back in the ignition
    Show answer

    Correct answer: Much more effort to control

    A vehicle with power steering and brakes takes much more effort to control once the ignition is off.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  3. Why should you not put the parking brake on suddenly when your brakes fail?

    A car's driver footwell with two pedals: a wide brake pedal and a narrower gas pedal
    • It could cause the engine to catch fire
    • It could lock the ignition and the steering
    • It will damage the brake lines
    • You could lose control of your vehicle
    Show answer

    Correct answer: You could lose control of your vehicle

    Putting the parking brake on suddenly could cause you to lose control of your vehicle.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  4. When your brakes fail, where should you work your vehicle?

    A three-lane freeway with a concrete median barrier: a blue car in the middle lane, a red car ahead in the left lane, a white SUV and a gray truck behind in the right lane.
    • Into the right lane, then toward the shoulder or an exit
    • Into the left lane, then toward the center median
    • Straight ahead in your lane until the car stops on its own
    • Across all lanes to the nearest intersection
    Show answer

    Correct answer: Into the right lane, then toward the shoulder or an exit

    When brakes fail, work the vehicle into the right lane and then toward the shoulder or, if possible, toward an exit.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  5. How can the engine help slow the car when your brakes fail?

    A car's driver footwell with two pedals: a wide brake pedal and a narrower gas pedal
    • Shift the car into reverse gear to slow the vehicle
    • Turn the engine off immediately
    • Shift the car into a lower gear
    • Press the gas pedal gently
    Show answer

    Correct answer: Shift the car into a lower gear

    With failed brakes, take your foot off the gas and shift into a lower gear to let the engine help slow the car.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  6. After your car has slowed in a lower gear with failed brakes, what is the next step?

    A car's driver footwell with two pedals: a wide brake pedal and a narrower gas pedal
    • Shift into neutral and gradually apply the hand brake
    • Pull the hand brake as hard as you can right away until the car stops
    • Turn off the engine and apply the hand brake quickly
    • Shift into park and hold the wheel steady
    Show answer

    Correct answer: Shift into neutral and gradually apply the hand brake

    Next, shift into neutral and gradually apply the hand brake until the vehicle stops.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  7. If your brakes have failed and the hand brake has also failed, what does the manual say to do?

    A three-lane freeway with a concrete median barrier: a blue car in the middle lane, a red car ahead in the left lane, a white SUV and a gray truck behind in the right lane.
    • Brake as hard as you can until the pedal grips again and the car stops
    • Steer into the oncoming lane to scrub off your speed
    • Steer onto a soft shoulder or rub a wheel against a curb
    • Turn the ignition off and let the car coast to a halt
    Show answer

    Correct answer: Steer onto a soft shoulder or rub a wheel against a curb

    If the hand brake has also failed, direct the car onto a soft shoulder or rub the wheel against a curb to help it slow down.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  8. What does the manual say about driving a vehicle that has no working brakes?

    A car's driver footwell with two pedals: a wide brake pedal and a narrower gas pedal
    • Drive it slowly in a low gear to the nearest garage or service station
    • Do not drive it, no matter how slowly; call for help
    • Drive it on side streets only until you reach home
    • Drive it only at night when traffic is light
    Show answer

    Correct answer: Do not drive it, no matter how slowly; call for help

    Do not attempt to drive your vehicle without brakes, no matter how slowly; call for help.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  9. If steam begins to come from under the hood, what should you do?

    Top view of a three-lane highway with a wide paved shoulder: a green car with white steam trailing from under its hood drives in the right lane, the shoulder beside it is empty, and a gray car is far back in the middle lane.
    • Open the radiator cap right away to let the steam escape
    • Keep driving at low speed to the next exit
    • Pour cold water over the engine immediately
    • Pull to the side of the road and turn off the engine
    Show answer

    Correct answer: Pull to the side of the road and turn off the engine

    Steam means your cooling system is boiling, so pull to the side of the road and turn off the engine.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  10. After you pull over and turn off an overheating engine, what should you do?

    A red car stopped on the shoulder of a highway with its hood raised and hazard lights flashing, as other cars pass
    • Open the radiator cap to check the coolant
    • Restart the engine to circulate the coolant
    • Add cold water to the radiator right away
    • Wait for the engine to cool
    Show answer

    Correct answer: Wait for the engine to cool

    Do not open the radiator cap; wait for the engine to cool.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  11. Which of these is named as a cause of most vehicle fires?

    • Under-inflated tires
    • An overheated engine
    • Worn windshield wipers
    • A cracked windshield
    Show answer

    Correct answer: An overheated engine

    Most vehicle fires result from an overheated engine, an electrical short, a fuel leak or an oil leak.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  12. How should you treat any burning odor in your vehicle?

    • Ignore it unless smoke appears
    • Wait until the next service check
    • Investigate it immediately
    • Treat it as normal engine heat
    Show answer

    Correct answer: Investigate it immediately

    Any burning odor should be immediately investigated because it may signal a vehicle fire.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  13. If smoke comes from under the hood of your vehicle, what is the first step?

    A dark blue car in the right lane of a two-lane highway with thin gray smoke rising from the front of its closed hood, and a white car in the left lane ahead.
    • Drive off the road clear of traffic and stop
    • Open the hood to see where the smoke is coming from
    • Stop in your lane and turn on your hazard flashers
    • Keep driving to the nearest repair shop
    Show answer

    Correct answer: Drive off the road clear of traffic and stop

    With smoke coming from under the hood, first drive off the road clear of traffic and stop.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  14. After you stop clear of traffic with smoke coming from under the hood, what do you turn off?

    A blue car stopped on the paved shoulder of a highway with grey smoke rising from its front; a white car passes in the lane.
    • Only the radio and the air conditioning
    • Only the engine, leaving electrical switches on
    • The engine and all electrical switches
    • Nothing; leave the engine running to cool it
    Show answer

    Correct answer: The engine and all electrical switches

    Turn off the engine and all electrical switches.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  15. Why should you get all passengers out of and away from a vehicle that has smoke coming from under the hood?

    A blue car stopped on the paved shoulder of a highway with grey smoke rising from its front; a white car passes in the lane.
    • Poisonous fumes may fill the vehicle
    • The fuel tank will explode within seconds
    • The doors may lock automatically
    • The seat belts may melt onto the seats
    Show answer

    Correct answer: Poisonous fumes may fill the vehicle

    Get all passengers out of and away from the vehicle because poisonous fumes may fill it.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  16. What may you use to smother a small vehicle fire?

    A car stopped on the shoulder with flames and black smoke coming from under its hood, and a white car in the travel lane
    • Water from a puddle
    • Cold engine oil
    • Windshield washer fluid
    • Sand or dirt
    Show answer

    Correct answer: Sand or dirt

    If the fire is small, use a chemical fire extinguisher, dirt, mud, sand or clothing to smother it.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  17. What should you not use on a small gasoline, oil or electrical fire?

    A car stopped on the shoulder with flames and black smoke coming from under its hood, and a white car in the travel lane
    • Clothing
    • Water
    • A chemical fire extinguisher
    • Sand from the roadside
    Show answer

    Correct answer: Water

    Do not use water on a gasoline, oil or electrical fire.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  18. What should you do if a large gasoline or oil fire develops in your vehicle?

    A car stopped on the shoulder with flames and black smoke coming from under its hood, and a white car in the travel lane
    • Pour water on the fire from a safe distance
    • Do not try to fight it; seek assistance
    • Drive the vehicle to the nearest water source
    • Use all the dirt and clothing you can find to smother it
    Show answer

    Correct answer: Do not try to fight it; seek assistance

    You may not be able to fight a large gasoline or oil fire, so don't try; seek assistance.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 117 · Open this page in the manual

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  19. Why must you be very careful when you jump start a car from another car's battery?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • The cables could freeze to the battery posts
    • The engine could start in gear and lurch forward
    • The jump could burn out the headlights
    • Either battery could explode and cause injury
    Show answer

    Correct answer: Either battery could explode and cause injury

    Either battery could possibly explode and cause you injury during a jump start.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  20. Before jump starting a car, what do you do with the vent caps and the vent wells of the batteries?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • Take off the vent caps and put a cloth over the open vent wells
    • Keep the vent caps on and spray the vent wells with water to cool them
    • Take off the vent caps and leave the vent wells uncovered to let air in
    • Take off one vent cap and cover the other with tape
    Show answer

    Correct answer: Take off the vent caps and put a cloth over the open vent wells

    Take off the vent caps from both batteries and put a cloth over the open vent wells.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  21. Before connecting jumper cables, what should you turn off?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • Only the headlights and the parking lights, leaving the heater on
    • Only the radio and the windshield wipers
    • Lights, heater or air conditioning, and radio
    • Nothing; all electrical items should stay on
    Show answer

    Correct answer: Lights, heater or air conditioning, and radio

    Turn off lights, heater or air conditioning and radio before jump starting.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  22. When jump starting a car, the positive post of the dead battery is connected to which post?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • The positive post of the live battery
    • The negative post of the live battery, on the other car
    • The engine block of the live car
    • The frame of the dead car
    Show answer

    Correct answer: The positive post of the live battery

    Connect the positive post of the dead battery to the positive post of the live battery.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  23. After the positive posts are connected in a jump start, the negative post of the live battery is connected to which of these?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • The dead battery's positive post, or the radiator support bracket
    • The dead car's fuel line, exhaust pipe or radiator hose at the front
    • The dead battery's negative post, or the engine block or frame
    • The live battery's own positive post
    Show answer

    Correct answer: The dead battery's negative post, or the engine block or frame

    Connect the negative post of the live battery to the negative post of the dead battery or to the engine block or frame.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  24. Before starting the car that is giving the jump, what must you make sure of?

    • The two cars are parked bumper to bumper
    • The two cars are not touching
    • Both engines are running at the same time
    • The hoods of both cars are closed
    Show answer

    Correct answer: The two cars are not touching

    Make sure the two cars are not touching, then start the car giving the jump.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  25. During a jump start, which car do you start first?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • The car with the dead battery, using the live car's cables
    • Both cars at the same time
    • Whichever car is parked on the right
    • The car giving the jump
    Show answer

    Correct answer: The car giving the jump

    Start the car giving the jump first; after it has run a few minutes, start the other car.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  26. How do you take off the jumper cables after the dead car has started?

    A blue car and a white car parked nose to nose with a gap between them, both hoods raised; a red cable and a black cable lie on the pavement between them.
    • In the same order in which they were connected to the batteries
    • All at once, pulling both ends together
    • With the engines turned off, in any order that you choose
    • In the opposite order from the way they were connected
    Show answer

    Correct answer: In the opposite order from the way they were connected

    Take off the cables in the opposite order and put the vent caps back on.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  27. If you get battery acid on your skin, eyes or car, what should you do?

    • Wipe it off with a dry cloth and wait
    • Wash it off immediately with water
    • Cover it with a cloth and drive on
    • Let it dry before cleaning it
    Show answer

    Correct answer: Wash it off immediately with water

    Battery acid on your skin, eyes or car should be washed off immediately with water.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  28. Why must you never light a match or smoke a cigarette near a battery?

    • The battery acid will ignite on contact with smoke
    • The heat can drain the battery's charge completely
    • The fumes from the battery can cause an explosion
    • The smoke can damage the battery cells for good
    Show answer

    Correct answer: The fumes from the battery can cause an explosion

    The fumes from a battery can cause an explosion.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  29. At the first sign of car trouble while driving, what should you do?

    A car's driver footwell with two pedals: a wide brake pedal and a narrower gas pedal
    • Gently and smoothly take your foot off the accelerator
    • Brake hard and stop where you are as quickly as you possibly can
    • Speed up to reach the next exit before the car stops
    • Switch off the ignition right away to protect the engine
    Show answer

    Correct answer: Gently and smoothly take your foot off the accelerator

    At the first sign of car trouble, gently and smoothly take your foot off the accelerator and do not brake hard or suddenly.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  30. If car trouble happens while you are on an interstate, what should you try to do?

    Top view of a three-lane highway with a wide paved shoulder: a green car with white steam trailing from under its hood drives in the right lane, the shoulder beside it is empty, and a gray car is far back in the middle lane.
    • Stop immediately in your lane
    • Turn around and drive back to the last exit
    • Reach an exit
    • Cross the median to the opposite side
    Show answer

    Correct answer: Reach an exit

    On an interstate, try to reach an exit while working your vehicle toward the side of the road.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  31. When you work a troubled vehicle toward the side of the road, what do you do about the drivers behind you?

    Top view of a three-lane highway with a wide paved shoulder: a green car with white steam trailing from under its hood drives in the right lane, the shoulder beside it is empty, and a gray car is far back in the middle lane.
    • Signal your intentions to them
    • Flash your high beams at them to get them to slow down
    • Sound the horn continuously
    • Wave them around your vehicle
    Show answer

    Correct answer: Signal your intentions to them

    Signal your intentions to drivers behind you as you work toward the side of the road.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  32. Once your disabled car is off the road, how do you make it visible to other drivers?

    A multi-lane interstate: a white car is stopped on the right shoulder with its hood closed, the blue car drives in the right lane and other cars pass in the left lanes.
    • Leave the headlights on high beam and the engine running
    • Wave a flashlight at approaching cars from the edge of the roadway
    • Put the spare tire in the lane behind your vehicle as a warning
    • Put reflectorized triangles behind it or use emergency flashers
    Show answer

    Correct answer: Put reflectorized triangles behind it or use emergency flashers

    Put reflectorized triangles behind your vehicle or use your emergency flashers to alert other drivers.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  33. If it is dark when your disabled car is stopped off the road, what should you turn on?

    A dark interstate at night with a stopped car on the right shoulder and another car approaching in the right lane with its headlights on.
    • The high-beam headlights
    • The interior dome light
    • The windshield wipers
    • The radio and heater
    Show answer

    Correct answer: The interior dome light

    If it is dark, turn on the interior dome light so your vehicle can be seen.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  34. If you have flares, how far behind your disabled car should you put them?

    A dark interstate at night with a stopped car on the right shoulder and another car approaching in the right lane with its headlights on.
    • At least 25 feet
    • At least 100 feet
    • At least 50 feet
    • At least 300 feet
    Show answer

    Correct answer: At least 100 feet

    Put flares at least 100 feet behind your car.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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  35. Instead of trying to flag down other vehicles, what should you do when your car has broken down?

    A multi-lane interstate: a white car is stopped on the right shoulder with its hood closed, the blue car drives in the right lane and other cars pass in the left lanes.
    • Stand at the back of the car and wave a flashlight at passing drivers
    • Walk along the edge of the interstate to find a phone
    • Sit in the driver's seat and keep honking the horn
    • Raise your hood and tie a white cloth to the antenna or a window
    Show answer

    Correct answer: Raise your hood and tie a white cloth to the antenna or a window

    Do not flag down vehicles; raise your hood and tie a white cloth to the radio antenna or hang it out a window so officers or tow truck operators know you need help.

    Source: Class D & E Driver’s Guide (Revised August 2025 (DPSMV2052 R08/25)), page 118 · Open this page in the manual

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